US 12,257,752 B2
Multi-mold block drive device and injection molding machine having the multi-mold block drive device
Cheng-Ho Chen, Changhua County (TW); Chih-Tsung Kuo, Taichung (TW); and Chuen-Cherng Yang, Taichung (TW)
Assigned to Cheng-Ho Chen, Changhua County (TW); and Chih-Tsung Kuo, Taichung (TW)
Filed by Cheng-Ho Chen, Changhua County (TW); and Chih-Tsung Kuo, Taichung (TW)
Filed on Jun. 20, 2023, as Appl. No. 18/337,915.
Claims priority of application No. 111123094 (TW), filed on Jun. 21, 2022.
Prior Publication US 2023/0405894 A1, Dec. 21, 2023
Int. Cl. B29C 45/06 (2006.01); B29C 45/33 (2006.01); B29C 45/57 (2006.01)
CPC B29C 45/332 (2013.01) [B29C 45/572 (2013.01); B29C 2045/575 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A multi-mold block drive device comprising:
a guide seat including an inner peripheral surface surrounding an axis and defining a mold hole, an outer peripheral surface opposite to said inner peripheral surface, and a plurality of spaced-apart guide holes surrounding said mold hole, each of said guide holes extending through said inner peripheral surface and said outer peripheral surface along a central line transverse to the axis and communicating with said mold hole;
a plurality of speed reduction drive units that are disposed spaced apart from said outer peripheral surface, that are positioned relative to said guide seat, and that correspond respectively to said guide holes, each of said speed reduction drive units including a servo motor, and a speed reducer driven by said servo motor, said speed reducer having an eccentric shaft disposed eccentrically and capable of outputting rotational force; and
a plurality of mold locking units each connected between one of said guide holes and a corresponding one of said speed reduction drive units, each of said mold locking units including a pivot shaft that is fixed relative to said guide seat and that is located outwardly of a corresponding one of said guide holes, a linkage disposed between said pivot shaft and the corresponding one of said guide holes, and a guide rod pivoted to said linkage, said linkage including a crank driven by said eccentric shaft, a first link arm pivoted between said crank and said pivot shaft, and a second link arm pivoted between said crank and said guide rod, wherein, when said linkage of each of said mold locking units is driven by the corresponding one of said speed reduction drive units, said linkage will in turn drive said guide rod to move linearly along the central line.